Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977 — Patek Philippe. A fine 18K white gold automatic calendar bracelet watch with sigma dial

Sign in to download a work market report (PDF) — placement, comparables, and the artist's market, generated from the record.

Estimate: £12,000–£18,000 hammer ≈ $15,903–$23,855
Result
Performance
Sale: Bonhams — Fine Watches, London, New Bond Street · 15 December 2021
Record ID: TB-2026-647376
Record: first seen 21 Jul 2026 · updated 22 Jul 2026 · source ↗
Cite this record: TB-2026-647376 — https://thebasis.art/cite/TB-2026-647376

Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977. Bonhams, 15 Dec 2021, lot 19. bought in (did not sell). TheBasis.Art, TB-2026-647376.

Cite this record permanent · resolvable · quotable

Appraisal reports, insurance claims, catalogue entries and footnotes. The identifier never changes, and anyone can resolve it back to this page at https://thebasis.art/cite/TB-2026-647376.

Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial, Calatrava, Ref: 3445/6, Manufactured 1971, Purchased September 29th 1977. Bonhams, 15 Dec 2021, lot 19. bought in (did not sell). TheBasis.Art, TB-2026-647376.

Test the link

The citation omits the realized price because this record is not unlocked. Everything else in it is complete and permanent.

From the same sale Fine Watches · Dec 2021

Lot	Artist	Estimate	Result
Cosmograph Daytona, Ref: 116503, Recent	Rolex. A Fine Stainless Steel And 18k Gold Automatic Chronograph Bracelet Watch With Diamond Set Dial	£12,000–£18,000
Submariner, Ref: 5513, Circa 1966	Rolex. A Stainless Steel Automatic Bracelet Watch With Gilt Gloss Dial	£10,000–£15,000
Cosmograph Daytona, Ref: 6239/6242, Circa 1969	Omega. A Rare Stainless Steel Manual Wind Chronograph Wristwatch	£40,000–£60,000
Oyster Monoblocco, Ref: 4500, Circa 1946	Omega. A Rare Stainless Steel Manual Wind Chronograph Wristwatch	£20,000–£30,000
Anti-Magnetic Oyster Chronograph 'Pre-Daytona', Ref: 6234, Circa 1960	Omega. A Rare Stainless Steel Manual Wind Chronograph Wristwatch	£30,000–£40,000	upcoming
GMT-Master 'Pepsi', Ref: 1675, Circa 1961	Rolex. A Stainless Steel Automatic Calendar Bracelet Watch With Dual Time Zone And Pointed Crown Guards	£15,000–£20,000

Comparable results nearest sold works, same medium & price band

Artist	Lot	Result USD, incl. premium	Sale
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Ellipse, Ref: 3604/2, Purchased 5th September 1975	$18,518	Bonhams, Feb 2023
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Ellipse, Ref: 3605-1, Circa 1970		Bonhams, Sep 2022
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Calatrava, Ref: 3445/6, Manufactured 1971, Purchased Septemb		Bonhams, Feb 2024
Patek Philippe. A Fine 18k White Gold Automatic Calendar Bracelet Watch With Sigma Dial	Gondolo, Ref: 5030/22J-001, Purchased 20th December 2000		Bonhams, Jun 2022
Patek Philippe. An 18k Gold Manual Wind Wristwatch	Purchased 31st October, 1935		Bonhams, Oct 2024
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Deepsea Sea-Dweller, Ref: 116660,		Bonhams, Apr 2022
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	'Double-Red' Sea-Dweller, Ref: 1665, c.1977		Bonhams, Oct 2023
Omega. A Stainless Steel Automatic Calendar Bracelet Watch	Explorer, Ref: 1016, Circa 1957		Bonhams, May 2024

The closest sold results by price, artist, and medium — the appraiser's comp set, generated from the corpus. All figures converted to USD at current reference rates.